All FEMTO photoreceivers now include optional free space (FS) input Ø25 mm flanges. Also available are Ø1.035“-40 threaded free space (FST) flanges, for even more flexibility on your optical bench!
The new external threaded free-space input is supplied together with a matching internal threaded coupling ring offering a broad compatibility with lenses, tubes, cage systems and other accessories from various manufacturers.
For example, converting the free-space FST input to an optical fibre input is easily achieved by screwing on the optional FEMTO fibre adapters (PRA-FC and PRA-FSMA). FEMTO fibre adapters are recommended for photosensitive areas of =>Ø0.4 mm. (Note: coupling efficiency may be compromised for photodiodes with smaller diameter.)
Existing FEMTO photoreceivers with FS-input can be converted to FST-input; contact us for further details.
